It is, as well, necessary a valve to control the water intake to the turbine placed just
behind the coupling dresser (toward the water intake) to facilitate the removal or
replacement of the turbine with the valve closed.
The valve for this turbine, as built, was a gate type valve but another type of valve can
be used to control the water, it can be butterfly type valve.
To accomplish the installation of the coupling dresser and the valve, both have to be
aligned to the pressure tubing and turbine with the help of a hoist to support each one of
the pieces. Once the elements are aligned (forming a common axis), a 6 mm thick
rubber reinforced gasket is placed between the two flanges and bolted tight.
To obtain the best alignment between the turbine and the pressure tubing, the process can be
initialized with the placement of the turbine (Foundation and anchoring of it) then align the
tubing to the turbine with the coupling dresser and Valve assembled, or install the turbine and
tubing assembled, first doing the leveling and alignment then placing concrete to the base of the
turbine and to the tubing, preferably in the change of direction (elbow).
4. - RUNNER INSTALLATION AND ACCESORIES ON THE SUPPORTS
After the turbine installation, the concrete needs to harden for 8 days, and then proceed
to assemble the turbine components by installing the guides first, that forms a moveable
group, (it was built with this characteristic for the purpose of an easy installation or
removal). The mating of this piece to the frame is done via bolts and silicon rubber as a
“sealant”.
The runner is assembled to the lowest part of the shaft, affixed with a square wedge,
being the shaft supported by two bearings that carry the radial and axial forces.
For the transmission of movement and power, a set of pulleys and belts are used. The
power pulley is installed on the shaft between two load-carrying bearings that are
installed and affixed with a square wedge and the pulley, for easy assembling, has an
adjustable cone .